PANTRAF: PROGRAM FOR THE CALCULATION AND DESIGN OF HOLLOWCORES
Simple HOLLOWCORE slabs with semi-rigid joints, placed in continuity
UP TO 4 SPANS + OVERHANGS
Calculation according to Eurocode 2 UNI EN 1992-1-1 version 2005 and Italian NTC 17-01-2018.
AUTOMATIC DESIGN OF THE HOLLOWCORE:
IF YOU THINK 10 SECONDS ARE TOO MUCH, PANTRAF CAN CHOOSE, FROM A LIST DEFINED BY THE USER, THE RIGHT HOLLOWCORE WITHIN 4 SECONDS, JUST THE TIME TO WRITE SPAN AND LOADS. PANTRAF WILL PROPOSE THE HOLLOWCORE TYPE, THE NUMBER OF HOLES TO FILL, MINIMUM REBARS BOTH FOR FLEXION AND SHEAR.
"PAN-TRAF" (HOLLOWCORES) is dedicated to element that are without shear reinforcement (stirrups).
FEATURES OF THE MODULE
- Aggiornati alle nuove normative NTC del 17/01/2018
- PROGETTO AUTOMATICO DEL SOLAIO ALVEOLARE
- FINO A 4 CAMPATE + SBALZI
- Facilissimo da usare e velocissimo
- Risultati completi, evidenziati e facilmente controllabili
- Assistenza tecnica compresa
The program verifies and checks iteratively prestressed beams of sections that are symmetrical respect to the vertical axis, according to Eurocode 2 UNI EN 1992-1-1 : 2005 and Italian NTC2018 (ULS, SLS).
Constantly updated to the newest Regulations
ULS Shear verification at supports
AUTOMATIC FILLINGS OF CORES - The program automatically calculates and highlights the number of cores that are necessary to be filled to verify shear check
The verification is made in a serie of sections with constant step along the whole beam lenght + the first prestressed section + the most stressed section for bending + the last prestressed section.
Calculation according to Eurocode 2 of the percentage of strands area that can be used as reinforcement anchored on support. This area of reinforcement is used for the checks with cast in place not still solidified, to which necessary reinforcement area is added for the checks with all the loads.
Superior reinforcement
Self-weight of hollowcores and cast in place are automatic or set by user
Joints cast in place CIP concrete between hollowcores is computed for the calculation of composite section properties: for shear and bending moment verifications
Reinforced rebars also in the cast between hollowcores
Possible reduction of the Elastic module of the precast element
Rebar to be grouted in for negative bending moment (tension at extrados)
Shear verification EN1168
Shear verification at midspan
At the ends of the beam it's possible to input a percentage of joint
The program will also verify the transitional phases: the draft, lifting, lifting / transport after a storage period
Moment and shear graphs
The losses of tension are calculated in the centre of gravity of the strands contained in the lower 2/3 of the beam. The calculation at limit states is executed in an exact manner based on diagrams of breakage of the strands supplied by the manufacturer of the strands.
In each section the programs checks main traction and compression sigmas on the centre of gravity and shows the minimum distance where the stirrups should be placed. Superior and inferior reinforcement is always calculated, to absorb the tractions as requested from Regulations.
There is the possibility to calculate any section chosen from the user, with the control of main tau and sigma of traction on the whole height of the section.
Shear Verification in the not-prestressed section on support, following the method “variable strut inclination method”
Display of Constraint reactions Rare and Ultimate left and right (also shown in the calculation report).
USE DIAGRAMS research of the span-capacities diagram, given a certain reinforcement
Verification of overhang support
Verification in partial prestress
SEISMIC VERIFICATION
Verification of GERBER SUPPORT
FIRE VERIFICATION
SNOW-WIND LOADS for each Italian location for any load situation.
Calculating the loads, the program adds 1 cm to the beam length to take into account production tolerances. If there is a cast in place and the upper floor width is less than the lower one, the program adds the weight of the cast in place that fills the gap between two near floors.
AUTOMATIC DESIGN OF THE HOLLOWCORE
IF YOU THINK 10 SECONDS ARE TOO MUCH, PANTRAF CAN CHOOSE, FROM A LIST DEFINED BY THE USER, THE RIGHT HOLLOWCORE WITHIN 4 SECONDS, JUST THE TIME TO WRITE SPAN AND LOADS. PANTRAF WILL PROPOSE THE HOLLOWCORE TYPE, THE NUMBER OF HOLES TO FILL, MINIMUM REBARS BOTH FOR FLEXION AND SHEAR.
AUTOMATIC PROJECT OF THE NEEDED STRANDS The program designs the minimum needed pre-tended strands FOR BREACKING VERIFICATION
Automatic calculation of all the geometrical characteristics
The beam can have CAST IN PLACE and POINT LOADS. User can input piece of rebars in any point of the beams
Editing of a database of the most used roof elements for the automatic calculation of G1, so that the user doesn’t need to look through weight tables each time
Input of loads on beam using m2 or m, user choice
Reports and tables can be exported as: DOC, RTF, PDF, HTML
Fast check or results with highlight of eventual values over the limits of the Rules, any values NOT verified are indicated in red, while the values shown in blue are the values within the limits
Graph of the minimal needed area of stirrups along the whole beam
Easy and graphic management of strands, rebars and sheaths.
Handy starting menu
Settings of defaults data can fasten the inputs of the most used configurations of beams
For users that works for more companies, it is possible to save all the default data and the parameters depending on the Company in "Criterions", so that it is easier and fast to switch from a job to another without worring about all settings. For example., it is possible to save any number of lifting ans transportation schemas.
It is possible to switch from one section to another for the verification in a few seconds and immediately see if it is satisfied or not.
SCHEME OF THE BEAM: in every moment current section, cast in place if present, rebars, pre+post tensed strands and calculation results are displayed to always keep the situation under control.
FREE ADD-INS FOR ALL PROGRAMS engineers can easily and quickly make daily calculations
- CALCULATION OF THE REBARS AREAS (for one or more rebars, to add them and to calculate the rebar area/m)
- TABLE OF REBAR AREAS
- TABLE OF STRAND AREAS
- UNIT OF MEASURE CONVERSION
- SEISMIC PARAMETERS
- SNOW-WIND LOADS for each Italian location for any load situation.
SO FAST IT CAN BE USED ALSO IN THE QUOTING STEP
Lots of enhancements are made according to customer request
Available Languages : Italian, English, Spanish
#1.1. Peso proprio alveolare e getto integrativo del giunto
#1.4. Riduzione del modulo elastico del prefabbricato
#1.5. Verifica a taglio EN1168
#1.7. Verifica a taglio in campata
#1.8. Verifica a taglio in campata
#Aggiornamento verifica appoggio per NTC 2018
Peso proprio alveolare e getto integrativo del giunto
Possono essere imposti dall’utente nella fase di definizione della sezione, nel Modulo Geometrie, altrimenti vengono calcolati dal programma sulla base delle geometrie teoriche.
Getto del giunto
Viene considerato per l’aumento della larghezza bw nel calcolo del taglio e delle caratteristiche geometriche di seconda fase.
Spezzoni integrativi
Possono essere inseriti a cura dell’utente nel getto tra i giunti. Il programma li mette in conto solo nelle verifiche in seconda fase, cioè con i carichi successivi alla solidarizzazione del getto in opera.
Riduzione del modulo elastico del prefabbricato
Per tener conto dell’effetto sul modulo elastico E del calcestruzzo, dovuto alla maturazione accelerata dei getti in stabilimento, è stato introdotto un coefficiente riduttivo, variabile da 0.6 a 1.
Verifica a taglio EN1168
E’ stata aggiunta la possibilità di fare la verifica a taglio a filo d dall’appoggio usando la formulazione EN1168. La formulazione viene utilizzata anche per la prima fase, in cui si può fare conto del solo prefabbricato.
Appare una stampa di questo tipo
Armatura al negativo
Dalla tabella del calcolo, cliccare su Relazione Continua
Appare questa videata in cui è calcolata l’armatura superiore:
Verifica a taglio in campata
Il programma differenzia la verifica a taglio in campata a seconda che la sezione sia interamnete reagente o fessurata.
Se è interamente reagente utilizza la formulazione dell’EC2 o dell’EN1168 a seconda della scelta dell’utente. Se viene superato il limite a fessurazione all’intradosso oppure all’estradosso viene usata la formulazione EC2.
Verifica a taglio sezione interamente reagente
Formule 6.4 EC2, oppure 4.1.24 NTC 2018 valida in Italia.
Oppure formulazione EN1168, vedi qui sotto.
Verifica a taglio sezione fessurata
Formule tratte dal paragrafo 6.2.2 EC2, vedi qui sotto.
Verifica a taglio in campata
Il programma differenzia la verifica a taglio in campata a seconda che la sezione sia interamente reagente o fessurata.
Nella relazione finale appare questo paragrafo che specifica per ogni sezione la formulazione adottata.
Aggiornamento verifica appoggio
Le nuove NTC del 2018 hanno variato la verifica sull’appoggio effettuando una modifica chiarificatrice di un punto un po’ controverso. La nuova espressione, riportata qua sotto, è allineata con la formulazione proposta dall’Eurocodice 2.
Con questa nuova impostazione il programma confronta il taglio resistente fornito dall’armatura, mediante il termine rol, con un valore di taglio resistente minimo che è sempre presente sull’appoggio.
Riassumo il procedimento di verifica sull’appoggio, ai sensi delle NTC del 2018.
Prima fase
Carichi : peso proprio + getto
Si considera reagente la sola sezione precompressa,
Il programma calcola quanta armatura di precompressione è attiva al filo netto dell’appoggio, calcola il rol corrispondente e quindi calcola Vrdc e Vmin in prima fase. Prende il massimo dei due e lo confronta con il taglio di questa fase.
Qui di seguito è riportata una stampa di verifica di esempio.
Seconda fase
Carichi : tutti
Si considera reagente la sezione precompressa omogeneizzata al getto nei giunti e al getto della cappa.
Il programma calcola quanta armatura lenta è necessario mettere all’appoggio, mediante la formula VSLU/fyd, la aggiunge all’area di trefoli messa in conto nella prima fase, calcola il rol corrispondente e quindi calcola Vrdc e Vmin in seconda fase. Prende il massimo dei due e lo confronta con il taglio di questa fase.
Se necessario il programma aggiunge fori riempiti.
Se l’utente ha imposto un dato numero di fori riempiti, in questo esempio 1 per testata, il programma aumenta il ferro sull’appoggio rispetto al valore fornito dalla VSLU/fyd.
Nell’esempio che segue ai 2.95 cm2 minimi necessari, occorre aggingere altri 4.74 cm2 di ferro per verificare l’appoggio, per un totale di 2.95+4.74 = 7.69 cm2 in opera.
The PREF program is a suite of modules for the calculation of prestressed beams of various gometry which is distributed on an annual subscription basis.
The subscription can be customized, choosing the modules of your interest, and includes the use of the programs, technical assistance and all the updates that will be released.
The programs have hardware protection with a USB dongle.
At the top right of this site, click LOGIN, log in with the credentials provided in the initial package (or request them from support - it is not possible to create new ones for this purpose).
Click Download-Updates from the menu, you'll see the list of available updates depending on your subscription: download the desired ones and install them.
It is possible to check which programs need an update by opening the Program Manager and clicking "Updates": the programs to be updated will be listed with a red dot and those that already have the latest version will have a green dot.
It is not necessary to download the libraries and other files that you find in the list, they are only for assistance cases.
To reactivate a subscription, simply send us an email request, specifying whether the programs to be included in the package are the same or if you want to change them, you will be sent a quote for the new subscription.
The broken dongle is replaced for free.
Contact us to check if the dongle is actually broken and for all the details (usually a new dongle is sent and the broken dongle is collected by the courrier at delivery).
Log in to this site (top right) by cliccking LOGIN and entering using the given credential. Click Download-Updates menu.
Look for "Error 7 - Out of memory": the file to download with all the instructions "DLL FOR ERROR 7 - OUT OF MEMORY" is listed.
Instructions:
The downloaded file must be unpacked and the extracted dlls must be copied to
C:\WINDOWS\SYSTEM32
And in
C:\WINDOWS\SYSWOW64
The dlls may already be present, for safety it is strongly recommended to save a copy of the files on the PC before overwriting them.
Run the program (any program of the package). Select "Impostazioni", "Lingua" from the menu.
Select from the window the desired language:
Click "Salva".
The language is automatically updated for all open windows.
All windows, reports and the program warning messages will be in the chosen language.
MODIFICATION EFFECTS ALL PROGRAMS of EISEKO COMPUTERS.
Nella finestra SETTAGGI della finestra iniziale si può impostare il tiro del banco trefoli.
Qua premere MODIFICA
Qua selezionare la scheda IMPOSTAZIONI TIRO
Quindi premere il pulsante arancione SETTAGGI DEFAULT
Il programma RTL dà un messaggio di errore se il tiro trefoli complessivo supera i limiti imposti in “Impostazioni Tiro”.
Se si hanno a disposizione i valori del prefabbricatore si possono impostare quelli, la quota di riferimento Q.R. è spiegata, basta premere il pulsante "Vedi immagine", in alto a destra, e si ottiene questa finestra descrittiva.
I prefabbricatori hanno il progetto delle testate di tiro dei loro banchi di casseri.
Le testate sono delle strutture vere e proprie in calcestruzzo od acciaio a cui vanno appoggiati i martinetti durante la tesatura e a cui vanno fissati i trefoli prima di effettuare il getto delle travi nei casseri. Le testate devono reggere il tiro complessivo fino all’atto del taglio o del rilascio dei trefoli.
Il progettista delle testate le ha dimensionate in funzione di un tiro massimo dei trefoli variabile in altezza riferito ad una quota che stabilisce lui, che in genere è il piede dei contrafforti.
Si riporta uno schema indicativo.
Se non si hanno i valori del prefabbricatore si possono impostare dei valori a caso sufficientemente alti, per esempio Dist. Da Q.R. = 200 cm e Tiro = 1000 ton.
Si procede con: Elimina tutto, si impostano i valori e poi si procede con Aggiungi, Elimina Riga.
Si riporta un esempio
NOTE: you can call the technical support Tel. +39.045.80.31.894 and we will do the installation from remote connection
Or follow the procedure:
If you have the CD:
• Insert the CD: There are multiple folders on the CD, depending on the PREF package modules you purchased.
• All the folders and subfolders contain the installation programs, they must all be installed by launching the Setup.exe file of each folder and subfolder. The order in which the installations are carried out does not matter.
NB. DURING INSTALLATION:
o If version conflict messages appear (if you want to leave the exixting file in the system) click "No to all"
o If dll registration error messages appear click "Ignore" (or "Ok")
• Launch the Program manager - There wil be the setting of the programs
• Launch again the Program manager and enter the registration code provided by the assistance (if you do not yet have the code, press "Later").
• Launch all the purchased programs one by one, they will ask you the Database, select the mdb / mde file from the folder "C:\Users\Public\Public Documents\Eiseko Database" (the name of the database is similar to the name of the program). This operation must be done only once.
If you DO NOT have the CD:
• At the top right of this site, click LOGIN and enter the credentials you've been given.
• Download the installers of the modules included in the package
• Unzip the related downloaded zip files into separate folders. For each, launch the Setup.exe and follow the installation wizard. The order in which the installations are carried out does not matter.
NB. DURING INSTALLATION:
o If version conflict messages appear (if you want to leave the file in the system) click "No to all"
o If dll registration error messages appear click "Ignore" (or "Ok")
• Launch the Program manager - There wil be the setting of the programs
• Launch again the Program manager and enter the registration code provided by the assistance (if you do not yet have the code, press "Later").
• Launch all the purchased programs one by one, they will ask you the Database, select the mdb / mde file from the folder "C:\Users\Public\Public Documents\Eiseko Database" (the name of the database is similar to the name of the program). This operation must be done only once.
You are now ready to use the program.
There are pros and cons in both cases, the choice is very personal, but we recommend working on files.
If you work with file, you can save the file wherever you want, on the local PC or on the network (for example in the job order folder). When you create a new file of the project with the calculation program, you will have to manually select the text file of the section (created with the Geometries module) from the folder in which it was saved in. If you work on files it is good habit to make a backup of the project txt files in order not to lose the work you've done.
If you work with database you have all the beams (created with the Geometries program) and the projects (created with the calculation program) saved in the same file, whose management is automatic by the program and you don't have to worry about where you save it (you can see name and path of the file in the "Information" menu). The list could become very long. Anyway, you can do all the operations of saving multiple databases, using databases on the network, changing databases.
If you are working with a database you need to remember to make a backup of the mde / mdb files you used. The files must be saved in a folder on the PC where the user has all access privileges (modification and saving), we recommend C:\Users\Public\Public Documents\Eiseko Database (folder created by default with the installation of the program).
In the menu at the top right select "Data Input", "CompanyData"
Enter the desired data and press "Save".
In the menu at the top right select "Data input", "User data"
Enter the desired data and press "Save".
Yes, it is possible. It must be done BEFORE creating all the projects belonging to a specific job order.
From the main form, press “SETTINGS” and then “SET SEISMIC PARAMETERS”.
It will open then following window, in which it is possible to associate all the seismic data relating to the location of the selected job.
Each time a new project associated with the “Example” job is created, the program will automatically propose the data of the seismic parameters (they will obviously be modifiable).
NOTE: projects that already existed before these parameters are set will continue to use the previously saved data.
Tutti i “dati di default”, in gruppo, possono essere memorizzati in diversi “CRITERI”: ad es, se un ingegnere lavora per più ditte, può memorizzare i dati di default validi per le diverse ditte in più criteri ciascuno con il nome della ditta. Prima di creare il nuovo progetto scegliere il Criterio della ditta per cui si realizza il progetto di calcolo. L’uso dei “Criteri” si dimostra particolarmente utile per gli schemi di sollevamento e trasporto che possono variare da una ditta all’altra.
Yes, it is possible from version 21.00.00. If you have a previous version just update the program from this site and then you will be able to select "Verify Existing" in the materials window.
To learn more about the new features introduced in the new releases of all PREF programs, just go to the Updates and News page of the PREF, where the features included and the publication dates of all the major changes are specified in detail. If there are no details on a specific new version, these are minor bug fixes or improvements.
PREF Free Download
Please fill in the form below and we will send you an email with the link to download the FREE version of the software and all the instructions to the email address you entered.
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